Despite her misgivings, Kate agrees to Trevor's risky proposal to join him in his work to find a cure for tuberculosis. As Kate begins to unlock the mysteries of Trevor's past, his hidden depths fascinate her. But a shadowy enemy lies in wait, and Trevor's closely guarded secrets are darker than she ever suspected. As revelations from the past threaten to destroy their careers, their dreams, and even their lives, Trevor and Kate find themselves in a painfully impossible situation. With everything to lose, they must find the strength to trust that hope and love can prevail over all.

As a child, Lydia Pallas became all too familiar with uncertainty when it came to the future. Now, she's finally carved out a perfect life for herself - a life of stability and order with no changes, surprises, or chaos of any kind. She adores her apartment overlooking the bustling Boston Harbor, and her skill with languages has landed her a secure position as a translator for the U.S. Navy. However, it is her talent for translation that brings her into contact with Alexander Banebridge, or "Bane", a man who equally attracts and aggravates her.

Gray Delacroix has dedicated his life to building his very successful global spice empire, but it has come at a cost. Resolved to salvage his family before it spirals out of control, he returns to his ancestral home to save his brother and sister before it's too late. As a junior botanist for the Smithsonian, Annabelle Larkin has been charged with the impossible task of gaining access to the notoriously private Delacroix plant collection. If she fails, she will be out of a job and the family farm in Kansas will go under. 

Caroline Delacroix is at the pinnacle of Washington high society in her role as secretary to the first lady of the United States. But beneath the facade of her beauty, glamorous wardrobe, and dazzling personality, she's hiding a terrible secret. If she cannot untangle a web of foreign espionage, her brother will face execution for treason. Nathaniel Trask is the newly appointed head of the president's Secret Service team. He is immediately suspicious of Caroline despite his overwhelming attraction to her quick wit and undeniable charm.

Anna O'Brien leads a predictable and quiet life as a map librarian at the illustrious Library of Congress until she stumbles across the baffling mystery of a ship disappeared at sea. Thwarted in her attempts to uncover information, her determination outweighs her shyness and she turns to a dashing congressman for help. Luke Callahan was one of the nation's most powerful congressmen before his promising career was shadowed in scandal. Eager to share in a new cause and intrigued by the winsome librarian, he joins forces with Anna to solve the mystery of the lost ship. 

Libby Sawyer and her father return from summer vacation to find another family living in their home. Widower Michael Dobrescu brought his family all the way from Romania to stake a decades-old claim on their house, and he has no plans to leave. As a contentious legal battle drags on, Libby finds herself drawn to Michael and his mysterious past. But she’ll soon have to choose between her family and a man with decidedly unclear intentions.

Patrick O'Neill survived a hardscrabble youth to become a lawyer for the downtrodden Irish immigrants in his community. He's proud of his work, even though he struggles to afford his ramshackle law office. All that changes when he accepts a case that is sure to emphasize the Blackstones' legacy of greed and corruption by resurrecting a 30-year-old mystery. Little does Patrick suspect that the Blackstones will launch their most sympathetic family member to derail him. 

Eloise Drake's prim demeanor hides the turbulent past she's finally put behind her - or so she thinks. A mathematical genius, she's now a successful accountant for the largest engineering project in 1908 New York. But to her dismay, her new position puts her back in the path of the man responsible for her deepest heartbreak. Alex Duval is the mayor of a town about to be wiped off the map. He is stunned to discover the woman he once loved on the team charged with the demolition.

It has been six years since army nurse Jenny Bennett's heart was broken by a dashing naval officer. Now Lieutenant Ryan Gallagher has abruptly reappeared in her life at the Presidio army base but refuses to discuss the inexplicable behavior that destroyed their happiness. Ryan is in an impossible situation. One of the few men in the world qualified to carry out a daring assignment, he accepted a government mission overseas.

Sophie van Riijn needs access to the highest spot in her village to report accurate weather readings. Fascinated by Dierenpark, an abandoned mansion atop a windswept cliff, Sophie knows no better option despite a lack of permission from the absent owners. Quentin Vandermark intends to put an end to the rumours that have plagued his family by tearing down the mansion. But when the secrets of the Vandermarks are no longer content to stay in the past, will tragedy triumph, or will hope prevail?

Dr. Rosalind Werner is at the forefront of a groundbreaking new water technology - if only she can get support for her work. Nicholas, Commissioner of Water for New York, is skeptical - and surprised by his reaction to Rosalind. While they fight against their own attraction, they stand on opposite sides of a battle that will impact thousands of lives.

Zivon Marin was one of Russia's top cryptographers until the October Revolution tore apart his world. Forced to flee to England after speaking out against Lenin, Zivon is driven by a growing anger and determined to offer his services to the Brits. But never far from his mind is his brother, whom Zivon fears died in the train crash that separated them. Lily Blackwell sees the world best through the lens of a camera and possesses unsurpassed skill when it comes to retouching and re-creating photographs.

Lucy Drake's mastery of Morse code has made her a valuable asset to the American news agencies as a telegrapher. But the sudden arrival of Sir Colin Beckwith at rival British news agency Reuters puts her hard-earned livelihood at risk. Newly arrived from London, Colin is talented, handsome, and insufferably charming. Despite their rivalry, Lucy realizes Colin's connections could be just what her family needs to turn the tide of their long legal battle over the fortune they were swindled out of 40 years ago.

A volunteer for the newly established Weather Bureau, Sophie van Riijn needs access to the highest spot in her village to report the most accurate readings. Fascinated by Dierenpark, an abandoned mansion high atop a windswept cliff in the Hudson River Valley, Sophie knows no better option despite a lack of permission from the absent owners.

When the backlash from her work forces a return home to Baltimore, Clara finds herself face to face with a childhood sweetheart who is no longer the impoverished factory worker she once knew. In her absence, Daniel Tremain has become a powerful industry giant and Clara finds him as enigmatic as ever. However, Daniel's success is fueled by resentment from past wounds and Clara's deeply held beliefs about God's grace force Daniel to confront his own motives.